Average Calculator
Calculate the mean, median, mode, and other statistics for a list of numbers. Enter numbers separated by commas or spaces to get instant results.
6 valid numbers detected
Recommended Settings
Pro Tips
- •Mean is the sum divided by the count - it's sensitive to outliers, so one very large or small number can pull it noticeably
- •Median is the middle value when the numbers are sorted - it's more resistant to outliers than the mean
- •Mode is the most frequently occurring value - if every number appears exactly once, there is no mode
- •Standard deviation measures how spread out the numbers are from the mean - a small value means the numbers are clustered close together
Most Popular
Most users paste a column of numbers copied directly from a spreadsheet
When to Use This Tool
Calculate the average of a set of test scores or assignment grades.
Quickly get the mean, median, mode, and spread of a small data set without opening a spreadsheet.
Check the range and standard deviation of a list of measurements or observations.
Compare the mean and median of a data set to spot skew caused by outliers.
How It Works
Parse the entered text, splitting on commas, spaces, or line breaks, and discarding anything that isn't a valid number
Calculate the sum and mean by adding all values and dividing by the count
Sort the values to find the median, minimum, and maximum
Calculate the mode by counting occurrences of each value, and standard deviation by measuring the average squared distance from the mean
100% Private
Files never leave your device. All processing happens locally in your browser.
Lightning Fast
Powered by Client-side JavaScript statistics for optimal performance on modern browsers.
Open Source
Built with verified, open-source libraries. Fully transparent.
Frequently Asked Questions
What's the difference between mean and median?
The mean is the sum of all values divided by the count. The median is the middle value when the numbers are sorted. The mean is affected by extreme values (outliers), while the median is not.
What does it mean if there's no mode?
If every number in your list appears exactly once, there's no single most-frequent value, so the mode is reported as "None".
How is standard deviation calculated here?
This tool calculates population standard deviation: it finds the average of the squared differences between each value and the mean, then takes the square root of that average.
Is my data sent to a server?
No. All calculations happen instantly in your browser using JavaScript. Nothing you enter is transmitted anywhere.
Can I paste numbers directly from a spreadsheet?
Yes. The tool accepts numbers separated by commas, spaces, or line breaks, so pasting a column or row copied from a spreadsheet works without any reformatting.